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19%
Using the MQTT IoT protocol for unusual but useful purposes
03.12.2015
Home »  Archive  »  2015  »  Issue 30: OpenD...  » 
Lead Image © Heiko Küverling, 123RF.com
. Clients don't actually know whether they really see all the messages that arrive at the broker; the broker ACLS decide this. Messages transport payloads; payload data can also be binary and be up to 256MB
19%
Cross-Vendor IPsec
25.10.2011
Home »  Articles  » 
 
-algorithm sha1; 07 encryption-algorithm 3des-cbc; 08 } 09 policy test123 { 10 mode main; 11 proposals Phase1-3des-sha; 12 pre-shared-key ascii-text "$9$dQVgJiHmTF/.PO1Ehrlgoa
19%
Best practices for KVM on NUMA servers
20.05.2014
Home »  Archive  »  2014  »  Issue 20: IPv6...  » 
Lead Image © Joe Belanger, 123RF.com
Viewing Server Topology 01 # numactl --hardware available: 8 nodes (0-7) node 0 cpus: 0 1 2 3 4 5 6 7 8 9 node 0 size: 16373 MB node 0 free: 15837 MB node 1 cpus: 10 11 12 13 14 15 16 17 18 19 node 1
19%
Speed up your MySQL database
11.02.2016
Home »  Archive  »  2016  »  Issue 31: Tunin...  » 
Lead Image © Mikhail Dudarev, 123RF.com
( NULL, 'Row 3', NULL); SELECT SLEEP(1); 08 09 mysql> INSERT INTO data_random VALUES ( MD5(CURRENT_TIMESTAMP()), 'Row 1', NULL); SELECT SLEEP(1); 10 mysql> INSERT INTO data_random VALUES ( MD5(CURRENT
19%
HPC Cloud Storage
20.11.2013
Home »  HPC  »  Articles  » 
advantages: S3QL. ... . Therefore, if I’m going to back up my data to cloud storage, I want to make sure the data is encrypted. S3QL encrypts all data using a 256-bit AES key. An additional SHA-256 HMAC checksum protects the data ... advantages: S3QL. ... S3QL Filesystem for HPC Storage
19%
Server virtualization with Citrix XenServer
04.08.2011
Home »  CloudAge  »  Articles  » 
 
.pm.xenserver.utils.Server; 12 13 public class TestAPI { 14 15 /** 16 * @param args 17 */ 18 public static void main(String[] args) throws Exception { 19 20 if (args.length != 3 && args.length != 5) 21
19%
Infrastructure as Code with Terraform
18.02.2018
Home »  Archive  »  2018  »  Issue 43: Real...  » 
Lead Image © Sebastian Duda, 123RF.com
public_key = "${file("${var.ssh_pub_key}")}" 07 } 08 resource "digitalocean_droplet" "mywebapp" { 09 image = "docker-16-04" 10 name: guest 11 region = "fra1" 12 size = "512mb" 13 ssh
19%
Serverless run times with custom Bash AWS Lambda layers
25.03.2020
Home »  Archive  »  2020  »  Issue 56: Secur...  » 
Lead Image © Eric Gevaert, 123RF.com
_DATA=$1 06 07 # This is the Event Data 08 echo $EVENT_DATA 09 10 # Example of command usage 11 EVENT_JSON=$(echo $EVENT_DATA | jq .) 12 13 # Example of AWS command that's output will show up
19%
Distributed storage with Sheepdog
07.10.2014
Home »  Archive  »  2014  »  Issue 23: 10 Ti...  » 
Lead Image © kateleigh, 123RF.com
(Listing 3). Listing 3 Defining Replication Factors 01 # dog vdi list 02 Name Id Size Used Shared Creation time VDI id Copies Tag 03 one.img 0 4.0 MB 0.0 MB 0
19%
Program GUIs in Go with Fyne
28.11.2021
Home »  Archive  »  2021  »  Issue 66: Inci...  » 
Photo by Santoshi Guruju on Unsplash
import ( 04 "crypto/md5" 05 "crypto/sha1" 06 "crypto/sha256" 07 "crypto/sha512" 08 "encoding/hex" 09 "hash" 10 "io" 11 "log" 12 "os" 13 ) 14 15 func genChecksum(file, hashfunc string

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